Home / 120,758.64-180,882.60-76,362.48

Finding the Fourth Proportional to 120,758.64, 180,882.60 and 76,362.48

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Solution

The fourth proportional to 120,758.64, 180,882.60 and 76,362.48 is: 114,382.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,758.64 : 180,882.60 = 76,362.48 : x
  2. Step 2: Convert to fraction form
    120,758.64/180,882.60 = 76,362.48/x
  3. Step 3: Cross multiply
    120,758.64x = 180,882.60 × 76,362.48
  4. Step 4: Simplify right side
    120,758.64x = 13,812,643,924.85
  5. Step 5: Solve for x
    x = 13,812,643,924.85/120,758.64
  6. Step 6: Final answer
    x = 114,382.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.